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Nichols Arboretum
Illustrated Checklist
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Native and Naturalized (154)
Hybrids (3)
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Anonymous eBirder on 10 Sep 2023
- Golden-winged x Blue-winged Warbler (hybrid) Vermivora chrysoptera x cyanopteraLast observed by Ben Lucking on 18 Sep 2021
- Brewster's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F1 hybrid)Last observed by Geoffrey Clarke on 14 Sep 2019
Additional Taxa (35)
- Mallard/American Black Duck Anas platyrhynchos/rubripesLast observed by matthew sabuda on 26 Sep 2014
- Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmusLast observed by Bob Maddox on 5 Sep 2019
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Karen Markey on 21 Sep 2016
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Mace Hack on 25 Sep 2021
- Philadelphia/Warbling Vireo Vireo philadelphicus/gilvusLast observed by Laurence Binford UMMZ Archives on 21 Sep 1957
- House/Purple Finch Haemorhous mexicanus/purpureusLast observed by Roberto San Antonio on 13 Sep 2020
- Spizella sp./American Tree Sparrow Spizella/Spizelloides sp.Last observed by Tom Shehan on 17 Sep 2008
- Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensisLast observed by Eric R. Gulson C. on 4 Sep 2019
- Bay-breasted/Blackpoll Warbler Setophaga castanea/striataLast observed by Matt Bennink on 8 Sep 2022